I always stay at Nui's every time I go to Bangkok. Response is very fast and Nui is very thorough with giving directions, including writing the directions in Thai so you can just show it to the driver (if you're taking the taxi, Uber or Grabcar). He follows-up on you without coming off as intrusive. The place is about 5 minutes walk from the station and is near a convenience store and restaurants. The place is exactly in the photos and the small, thoughtful touches made it even better. The place has an awesome view of the city, and you can see the sunrise from the living room. It is spacious and has everything you need- iron and a portable ironing board, microwave, plates, utensils, a working fridge, room slippers, a map of Bangkok, a list of reminders and Nui's contact number in case you'd need it. The place is tastefully done and it comes stocked with water, some extra towels should you need them, and shampoo, body wash, toilet paper. There is also a pool you can use until about 9pm and a sky garden overlooking the city.
Nui can also recommend some day tours and airport transfers should you want them. As a local, he suggests good places to go and eat, and is very easy to reach if you have any questions.
The line for the taxi at the airport is usually very long, the last time I was there, the waiting time was over an hour. I suggest you take an Uber or Grabcar, as it's cheaper and way faster.
Nui isn't a superhost for nothing, and its always a pleasant experience staying in any of his places every time. Will definitely recommend.